40 - 50 watt amp

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radioman
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40 - 50 watt amp

Post by radioman » Fri Sep 05, 2014 6:08 pm

40 - 50 watt amp, 12- 15volts.
mrf237 driving a 2n6084

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teckniqs
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Re: 40 - 50 watt amp

Post by teckniqs » Fri Sep 05, 2014 11:58 pm

That looks like it's been built for the higher end of the band.
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sharky
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Re: 40 - 50 watt amp

Post by sharky » Sat Sep 06, 2014 7:12 pm

teckniqs wrote:That looks like it's been built for the higher end of the band.
I agree - looks like something you'd use for 144, however i've seen that layout before on a LDMOS device, think it'll go all the way down to 8v.. Very neat - well done
If you're going to put something on.... Don't brag, Just do; and for God's sake - do it properly!!!
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teckniqs
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Re: 40 - 50 watt amp

Post by teckniqs » Sun Sep 07, 2014 5:39 am

The main PA stage does definitely, modified for band II.
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radioman
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Re: 40 - 50 watt amp

Post by radioman » Fri Sep 12, 2014 3:45 pm

The main amp was on 144 mhz.
The pcb output coil track was cut and replaced with a 3 turn coil,
The base was replaced with different capacitance to bring it down to work on the top end of the broadcast band.
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ir8 pir8
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Re: 40 - 50 watt amp

Post by ir8 pir8 » Fri Sep 12, 2014 4:36 pm

Good stuff, keep them pictures coming... :smoke
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